Click to zoomCF8M Stainless Steel Wafer Lug Butterfly Valve
This stainless steel center line butterfly valve features excellent corrosion resistance, reliable sealing and long service life. With compact structure, low operating torque and easy operation, it is widely used for water, oil, gas, steam and neutral or mildly corrosive media. Suitable for water treatment, petroleum, chemical, HVAC, food and general industrial pipeline systems.
Description
One-piece body construction made of ductile iron, cast iron or Stainless Steel.
The ISO 5211 mounting pad with square or key type stem shaft enables direct mount actuation for both manual (lever and gear), pneumatic and electric operations.
Teflon stem bushing ensures long service life even during prolonged periods of activity. Reduced operator torque for effortless manual operation and maximum shaft support.
High-strength two-piece stem eliminates taper pins or disc screws, which frequently fail prematurely due to abrasion, corrosion or fatigue.
All disc castings are spherically machined and polished to extend seat life and achieve bubble-tight shut off. The seat type is available in both encapsulated phenolic or aluminum-backed cartridge seat.
The cartridge design seat allows for easy change without special tools. Reduced disc option is provided for lower pressure applications, requiring lower torque and smaller actuators.
The shell is tested to 150% and the seat is tested to 110% of the maximum working pressure.
Product Features
- Compact and light weight design facilitates easy installation and maintenance.
- Can be mounted in any required location; features a simple, compact construction with quick 90-degree on-off operation.
- Operating torque is minimized for enhanced energy efficiency.
- Provides bubble-tight sealing with no leakage during pressure testing.
- A wide range of materials available, suitable for various media applications.
- Long service life, proven to withstand tens of thousands of opening and closing cycles without failure.
- Flow curve approaches a straight line, demonstrating excellent regulation performance.
Working/Testing Pressure
| Size | DN | 40mm-300mm | 350mm-1200mm |
| Inch | 1-1/2"-12" | 14"-24" | |
| Working | 16bar | 10bar | |
| Testing | Shell | 24bar | 15bar |
| Seal | 17.6bar | 11bar | |
Working Temperature
| Seat Material | EPDM | NBR | FKM | PTFE |
|---|---|---|---|---|
| Temperature | -10°C to 120°C | -10°C to 80°C | -15°C to 200°C | -25°C to 180°C |
Material Specification
| Part | Material |
|---|---|
| Body | Cast Iron Ductile Iron WCB CF8 CF8M CF3M Duplex Steel Al-Bronze |
| Disc | Ductile Iron CF8 CF8M CF3M Duplex Steel Al-Bronze Harlar Coated |
| Shaft | SS410 SS416 SS420 SS431 SS316 17-4PH |
| Seat | EPDM NBR PTFE FKM Silicone |
| Bushing | FRP PTFE Bronze |
| Lever | Malleable Iron Carbon Steel Aluminum SS316 |
| Gear Box | Ductile Iron Aluminum SS316 |
Corrosion Protection
Epoxy Resin Powder Spray, minimum thickness not less than 300 microns
Disc Options
- Through shaft with Pin
- Pinless disc
- Slim disc concentric design (DN50–DN350)
Seat Options
- Cartridge rubber seat
Main Dimensions (mm)
| Size | A | B | C | d0 | PCD | N-Q | ØK | ØE | N-ØP | B1xB2 | J | L | ISO 5211 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| inch | mm | |||||||||||||
| 1 1/2" | 40 | 120 | 70 | 33 | 12.6 | 110 | - | 65 | 50 | 4-7 | 9x9 | - | 26 | F05 |
| 2" | 50 | 161 | 80 | 43 | 12.6 | 125 | - | 90 | 70 | 4-10 | 11x11 | - | 26 | F07 |
| 2 1/2" | 65 | 175 | 89 | 46 | 12.6 | 145 | - | 90 | 70 | 4-10 | 11x11 | - | 30 | F07 |
| 3" | 80 | 181 | 95 | 46 | 12.6 | 160 | - | 90 | 70 | 4-10 | 11x11 | - | 30 | F07 |
| 4" | 100 | 200 | 114 | 52 | 15.77 | 180 | - | 90 | 70 | 4-10 | 11x11 | - | 30 | F07 |
| 5" | 125 | 213 | 127 | 56 | 18.92 | 210 | - | 90 | 70 | 4-10 | 14x14 | - | 30 | F07 |
| 6" | 150 | 226 | 139 | 56 | 18.92 | 240 | - | 90 | 70 | 4-10 | 14x14 | - | 40 | F07 |
| 8" | 200 | 260 | 175 | 60 | 22.1 | 295 | - | 125 | 102 | 4-12 | 17x17 | - | 40 | F10 |
| 10" | 250 | 292 | 203 | 68 | 28.45 | 350 | - | 125 | 102 | 4-12 | 22x22 | - | 40 | F10 |
| 12" | 300 | 337 | 242 | 78 | 31.6 | 400 | - | 125 | 102 | 4-12 | 22x22 | - | 40 | F10 |
| 14" | 350 | 368 | 267 | 78 | 31.6 | 460 | - | 125 | 102 | 4-12 | 22x22 | - | 40 | F10 |
| 16" | 400 | 400 | 309 | 102 | 33.15 | 515 | - | 175 | 140 | 4-18 | 27x27 | - | 50 | F14 |
| 18" | 450 | 422 | 328 | 114 | 37.95 | 565 | - | 175 | 140 | 4-18 | 27x27 | - | 70 | F14 |
| 20" | 500 | 480 | 361 | 127 | 41.12 | 620 | - | 175 | 140 | 4-18 | 36x36 | - | 80 | F14 |
| 24" | 600 | 562 | 459 | 154 | 50.62 | 725 | - | 210 | 165 | 4-23 | 36x36 | - | 80 | F16 |
| 28" | 700 | 624 | 520 | 165 | 63.35 | 840 | 4-M27 | 300 | 254 | 8-18 | - | 2-18 | 85 | F25 |
| 32" | 800 | 672 | 591 | 190 | 63.35 | 950 | 4-M30 | 300 | 254 | 8-18 | - | 2-18 | 95 | F25 |
| 36" | 900 | 720 | 656 | 203 | 74.7 | 1050 | 4-M30 | 300 | 254 | 8-18 | - | 2-20 | 118 | F25 |
| 40" | 1000 | 800 | 721 | 216 | 84.7 | 1160 | 4-M33 | 300 | 254 | 8-18 | - | 2-22 | 118 | F25 |
| 48" | 1200 | 941 | 864 | 256 | 104.7 | 1380 | 4-M36 | 350 | 298 | 8-22 | - | 2-28 | 154 | F30 |
Note:
- *The shaft end can be double D and key connection. From DN700 and above, the shaft end is double key type.
- *The flange connection of the above table can be DIN2501 PN16, ASME B16.47-A 125/150LB, BS4504 PN10/PN16, JIS 10K, Table D, Table E
- *DN400's valve face to face can be 85.7mm & 102mm. DN450's valve face to face can be 104mm & 114mm
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